Casement window



E. ADAMS CASEMENT WINDO Filed June 27, 1925 Sepiz. '28

Patented Sept. 28, 1926.-

NiTED STATES 1,601,055 PATENT OFFICE.

EUGENE ADAMS, OF DUBU QUE, IOWA, ASSIGNOR TO THE ADAMS COMPANY, OFDUBUQUE, IOWA, A CORPORATION OF IOWA.

CASEMENT WINDOW.

Application filed June 27, 1925.

The invention relates to casement windows including a sash of the swingand lift type, in which the sash is automatically locked within theframe when the window is closed, the elements of the frame and the sashbeing so constructed and arranged as to provide a substantiallyweather-proof joint between the sash and frame at all points, both theframe and the sash being formed of specially shaped. steel bars toeifect this object and also to provide a strong, durable and lightconstruction of casement window that is not liable to damage orderangement of any of its parts.

The invention is illustrated in the accompanying drawing, in which Fig.1 is a front elevation of the casement window.

Fig. 2 is an enlarged vertical section of the lower part of the windowin perspective.

Fig. 3 is a cross section on line 3-3 of Fig. 1.

Fig. 4c is a section on line H of Fig. 1.

Referring to the drawings, 1 indicates the frame of the casement window,which, as usual, is of generally rectangular shape and of any desiredhorizontal and vertical dimensions, within which frame are pivoted twolift and swing sash members 2 and 2, which are respectively connected tothe vertical side members of the frame by sets of hinges 3 and 8, therespective members of each hinge being capable of relative longitudinalmovement in the direction of the axis of theconnecting pin, as is usualin this type of hinge which permits of a swinging and lifting movementof the sash. Each swinging sash member is provided with a bail or handle4 on its lower rail to facilitate the lifting and swinging movement ofthe sash.

The frame 1 is formed of shaped angle bars, preferably of rolled steel,and, generally speaking, the cross section of each bar is L-shaped, thatis to say with a relatively high right-angled or normal flange along oneedge and a low right-angled or normal flange on the opposite edge. Asindicated more particularly in Figs. 2, 3 and 4, each member of theframe comprises a web 5, a high normal flange 6 and a low normal flange7 and, preferably, a medium longitudinal flange 8, which is higher thanflange 7 and lower than flange 6. The top and side bars of the frame areso connected that Serial No. 39,990.

the flanges on the respective edges form continuous rim-like projectionsextending inwardly of the frame and in continuous alignment. The bottombar, which constitutes the sill of the window frame, is, however, offsetoutwardly so that its flanges 6 and 7 are spaced forwardly of thecorresponding flanges of the top and side members a distanceapproximately equal to the thickness of the flanges.

' Each sash member 2 and-2 is constructed of similar L-shape'd bars,where the rails and stiles of the sash engage the frame. When the Windowincludes a single swinging sash, both rails and both stiles of the sashwould preferably comprise these L-shaped bars, each consisting of a web10, a high normal flange 11 along'one edge and a relatively low normalflange 12 along the other edge with a mid flange 13 of intermediateheight. The L bars, constituting the sash structure, are, however,disposed oppositely to the L bars constituting the frame, so that, whenthe window is closed, the low flanges 12 of the sash will engage thehigh'flanges 6 of the frame and the high flanges 11 of the sash willengage the low flanges 7 of the frame, forming a practicallyweather-tight joint. The relation of the top rail of the sash and thetop bar of the frame, when the window is closed, is illustrated in Fig.3 and, similarly, the relation of the side members of the sash and frameare shown in Fig. 4. Fig. 2 clearly illustrates the relation of thebottom rail of the sash and the bottom bar or sill of the frame, whenthe window is closed, namely, with the high flange 11 of the sashengaging behind the shoulder of the low flange 7 of the frame, and thehigh flange 6 of the frame engaging the angle between the low flange 12and the web 10, so that the sash is securely locked in position againstmovement in any direction until it is lifted by the bail 4 and swungoutwardly, the extent of the lifting movement being sufficient to clearflanges 7 and 11 and 6 and 12 on the bottom rail of the sash and thesill of the frame, respectively. Sufficient clearance is left betweenthe sides and top of the sash and frame, respectively, to permit thesash to swing freely in its opening and closing movements. The medianflanges 8 and 13 on the elements of the frame and sash, respectively,are designed to strengthen the structures of the frame and sash and alsoto provide additional weather guards to prevent the entrance of air orthe seepage of water, when the window is closed.

As a matter of convenience and to avoid the necessity of manuallylifting the sash in the closing movement thereof, the lower corner ofthe sash may be beveled, as indicated in Fig. l, or alternatively theends of the sill 7 may be beveled outwardly and downwardly/ so that,when the sash is swung in its closing movement, it will be automaticallyliited by the beveled or inclined surface, sufliciently for the loweredge of the bottom rail of the sash to clear the corresponding flangeson the sill. The sash may be provided with a glass light 1;), which ispreferably secured in place by angle clips 17 secured by screws 18, thejoints between the glass and the sash being sealed by putty, cement, orthe like 16.

'lfhe easement window construction as described'is especially adapted tobasements or other situations subject to strenuous conditions, such asusage and weather, and the particular construction and arrangement ofthe engaging portions of the sash and frame not only enable the sash tobe securely locked within the frame, vwhen the window is closed, buteffect a practically air and waterproof seal between the sash and theframe at all points.

What I claim is:

1. A casement window comprising a frame formed of L bars, and a lift andswing sash formed of similar bars oppositely arranged with respect tothose in the frame; whereby the high flange of each member will slidablyengage the side of the low flange of the other member when the window isclosed.

A casement window comprising a frame formed of shaped bars having a highflange and a low flange on opposite edges and the same side, and a liftand swing sash formed of similarly and oppositely disposed bars; wherebythe high flanges of each member will slidably engage the sides of thelow flanges of the other member when the window is closed.

3. A casement window comprising a frame formed of flanged bars, theflanges of the bars forming the top and sides of said frame, being incontinuous alignment and the flanges of the bar forming the bottom ofsaid frame being offset with respect to the flanges of the bars formingthe sides of said frame, and a sash formed of bars having flangesadapted to co-operate with the outer faces of the flanges of the top andside bars of the flilll'lQ and the inner faces of the flanges of thebottom bar of the frame in closed position.

i. A casement window comprising a frame formed of flanged bars, theflanges of the bar forming the base or sill of the frame being offsetwith respect to the flanges of the other bars, and a lift and swing sashformed of bars having flanges co-operating with the flanges of the framebars in closed position to positively hold the sash against movementaway from the frame in closed position.

5. A casement window comprising a frame formed of flanged bars, theflanges of the bar forming the base or sill of the frame being oll'setwith respect to the flanges of the other bars, and a lift and swing sashformed of bars having flanges adapted to slidably engage and lock withthe flanges of the frame bars in closed position, said sash beingprovided with means cooperating with the offset base or sill of saidframe to automatically raise said sash with respect to said frame duringclosing movement of the sash to bring said flanges into co-operatinglocking engagement.

in testimony whereof I aflix my signature.

EUGENE ADAMS.

